Revolving swing construction



April 19, 1932. P. BLINK REVOLVING SWING CONSTRUCTION Filed Nov. 29, 1929 2 Sheets-Sheet April 19, 1932. P. BLINK REVOLVING SWING CONSTRUCTION Filed Nov. 29, 1929 2 SheetsSheet I INVENTOR. G A-w @m,

BY I

. 7A -rnvpnpve Patented Apr. 19, 1932 STATES PATENT OFFICE PETER BLINK, OF WEST ALLIS, WISCONSIN, ASSIGNOR TO MITCHELL MANUFACTUR-c ING 00., OF MILW'AUKEE, WISCONSIN, A. CORPORATION OF WISCONSIN REVOLVING swine CONSTRUCTION Application filed November 29, 1929. Serial No. 410,594.

This invention relates to improvements in revolving swing constructions.

It is one of the objects of the present invention to provide a type of playground apparatus in the form of a revolving swing in which an annular seat is effectively braced and suspended by overhead'members so positioned as to not endanger or form a hindrance to persons or children using the apparatus.

' A further object of the invention is to provide a revolving swing in which an annular seat is depended from vertical rods, which in turn are clamped at two points at their upper end portions to medial portions of U-shaped radial arms, the ends of said arms being secured to the upper and lower portions of a bearing member rotativelymounted on a central supporting post.

A further object of the invention is to provide a revolving swing in which the parts may be very quickly and easily assembled and which, when set up, is very rigid, stable and strong.

A further object of the invention is to provide a revolving swing which aifords safe and healthful exercise and amusement to those using it, and which can accommodate a plurality of persons at one time.

A further object of the invention is to pro vide a revolving swing construction which is simple. strong and durable, and is well adapted for the purposes described.

With the above and other objects in view, the invention consists of the improved revolving swing construction, and its parts and combinations as set forth in the claim, and all equivalents thereof.

In the accompanying drawings, in which the same reference characters indicate the same parts in all of the views:

Fig. 1 is a side view of the improved revolving swing construction;

Fig. 2 is an enlarged detail fragmentary View showing a U-shaped arm and its connection with the supporting post bearing and with a vertical seat suspending rod;

Fig. 3 is an enlarged detail sectional view taken on line 3-3 of Fig. 2;

Fig. 4 is an enlarged detail sectional view taken on line 44 of Fig. 2; and

Referring now more particularly tothe 4;;

drawings, it will appear that the numeral 8 indicates an elongated central tubular mem-.

ber forming the central support for the ap paratus. The lower end portion of said member 8 is embedded in a support and extends vertically upwardly therefrom.

Mounted on the upper end portion of the support 8 is an elongated sleeve 9 forming a bearing member, and said sleeve is rotative with respect to the support on anti-friction devices interposed between said sleeve and the support. A collar 10 is secured fast about the lower portion of said sleeve, while the upper portion of said sleeve carries fast thereon a cap 11 formed with a flanged periphery 11'. A flag staff12 may project vertically upwardly from the cap. I An annular swing seat 13, preferably of octagonal form, surrounds the lower portion of thesupport 8, and said seat comprises at elongated seat members 14 connected together at their adj acent' end portions by castings 15. One of said castings is shown in detail in Fig. 5, and the same is formed with a socket portion 16 having a side slit'17.

Each socket receives the lower end portion of a seat suspending vertical rod 18 which is lar'seat guard rail 20.

' For the purpose of spacedly supporting wardly, outwardly directed portion. Also,

and bracing the seat carrying rods 18, aplurality of U-shaped arms 21 are povided. As

all of said arms are angularly spaced apart.

The upper end portion of each seat supporting rod 18 engages for a substantial length the vertical portion of an arm 21, and is connected thereto by a pair of clamps 22 and 23. The upper clamp 22 is shown in detail in Fig. 3, and will be seen to comprise two complementary sections, each of which has a pair of pipe engaging cupped portions 2 1 and 25 joined by a web 26. To clamp the two portions 24: to the rod 18 a bolt 2'? is extended through all of said parts. The two portions 25 are clamped about the arm 21 at the juncture of the vertical portion with the upper portion, by means of a bolt 28 extended through lugs 29 on said portions 25. It will also be noted that strap members 30 have their end portions secured to upper portions of the clamps The series of strap members, as shown in Fig. 1, form an annular horizontal upper connection end bracing means between the upper ends of the rods 18.

A lower clamp 23 is shown in detail in Fig.

- 4, and it comprises a pair of complementary sections, each section having a pair of cupped engaging portions 31 and 32 separated by a web 33. The portions 31 surround a portion of a rod 18 and are clamped thereto by a bolt 34 passing through lugs 35 on said portions 31, while the portions 32 surround a portion of an arm 21 at the juncture of the vertical portion of the arm with its lower portion. Clamping of said portions 32 is effected by a bolt 36 extended through lugs 37 Also, the two web portions 33 are secured together by a bolt 38.

It will thus be seen that the sleeve 9 and cap 11 carried thereby are revolubly mounted on the upper end portion of the central.support 8, and the swing seat 13, surrounding said support, is carried by the lower end portions of vertical rods 18. The upper end portions of said rods are securely joined at two points to the radially projecting U-shaped arms 21, which, in turn, are connected at their end portions to upper and lower portions of the sleeve 9. Hence, the seat, carried by said rods, may be revolved with the sleeve on and about said central support.

An important feature of the invention resides in the formation, disposition and connection of the arms 21. The upper and lower portions of each arm are connected to opposite end portions of the bearing sleeve so that the weight of the seat and arms will be distributed throughout the entire length of said sleeve. Furthermore, said upper and lower portions of the arms are radially directed, and are outwardly converging. The upper portion of each seat supporting rod engages practically the entire vertical portion of its arm, so that it is rigidly held and braced thereby. As the rods 18 are vertically extending, and all portions of the arms 21 and straps 30 are materially elevated from the seat or are overhead, the same can not form dangerous obstructions to persons on the seat, nor in any way restrict the use of the apparatus.

It should also be observed that the apparatus is provided with novel sockets and clamps for the securement of the rods and arms, and said members permit the quick and easy assembly of the apparatus.

From the foregoing description it will be seen that the improved revolving swing construction is both simple and novel, and is well adapted for the purposes described.

What I claim as my invention is:

In a revolving swing, a central vertical support, a sleeve member rotatably mounted on the upper portion thereof, a plurality of angularly spaced-apart, radially directed, unitary, U-shaped frame members having the ends of their arms secured to spaced portions of said sleeve member, vertical rods each having its upper end portion engaging a substantial length of the outermost portion of a frame member and clamped thereto at several spaced points, and a seat surrounding said support and carried by the lower end portions of said rods.

In testimony whereof, I aifix my signature.

PETER BLINK. 

